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//=======================================================================
// Copyright 1997, 1998, 1999, 2000 University of Notre Dame.
// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================
//
// Sample output
// DFS parenthesis:
// (0(2(3(4(11)4)3)2)0)
#include <boost/config.hpp>
#include <assert.h>
#include <iostream>
#include <vector>
#include <algorithm>
#include <utility>
#include "boost/graph/visitors.hpp"
#include "boost/graph/adjacency_list.hpp"
#include "boost/graph/breadth_first_search.hpp"
#include "boost/graph/depth_first_search.hpp"
using namespace boost;
using namespace std;
struct open_paren : public base_visitor<open_paren> {
typedef on_discover_vertex event_filter;
template <class Vertex, class Graph>
void operator()(Vertex v, Graph&) {
std::cout << "(" << v;
}
};
struct close_paren : public base_visitor<close_paren> {
typedef on_finish_vertex event_filter;
template <class Vertex, class Graph>
void operator()(Vertex v, Graph&) {
std::cout << v << ")";
}
};
int
main(int, char*[])
{
using namespace boost;
typedef adjacency_list<> Graph;
typedef std::pair<int,int> E;
E edge_array[] = { E(0, 2),
E(1, 1), E(1, 3),
E(2, 1), E(2, 3),
E(3, 1), E(3, 4),
E(4, 0), E(4, 1) };
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
Graph G(5);
for (std::size_t j = 0; j < sizeof(edge_array) / sizeof(E); ++j)
add_edge(edge_array[j].first, edge_array[j].second, G);
#else
Graph G(edge_array, edge_array + sizeof(edge_array)/sizeof(E), 5);
#endif
typedef boost::graph_traits<Graph>::vertex_descriptor Vertex;
typedef boost::graph_traits<Graph>::vertices_size_type size_type;
std::cout << "DFS parenthesis:" << std::endl;
depth_first_search(G, visitor(make_dfs_visitor(std::make_pair(open_paren(),
close_paren()))));
std::cout << std::endl;
return 0;
}
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